K663/RDR module (TTL, 232 or 485)

K663/RDR module (TTL, 232 or 485)

Serial interface contactless 'smart' reader, on antenna

The K663/RDR-TTL, K663/RDR-232 and K663/RDR-485 modules include the antenna: they are then the ready-to-use version of the K663/RDR module.

Their size is small (69x45mm antenna) but they are able to communicate with contactless cards or compliant badges at a distance up to 10cm.

Designed to be easily integrated, they require only a single 3 to 5V power supply, and support in-field firmware upgrade. Thanks to the Low Power Card Detection (LPCD) mode, the K663/RDR can be used even in power-constrained systems.

Communication with host is ensured thanks to a serial link. The product name then depends on the kind of link:

  • K663/RDR-TTL: RX/TX serial link at TTL level (0-5V) communication, in compliance with CMOS (0-3V)
  • K663/RDR-232: RX/TX serial link at RS-232 level (EIA 232 : -6/+6V) communication
  • K663/RDR-485: RS-485 (EIA 485) half-duplex serial communication


  • 2-year limited warranty
  • RoHS & WEEE compliant (environmental protection)
  • Carrier frequency: 13.56MHz
  • ISO 14443 (1, 2, 3 and 4, both type A and type B): Proximity Coupling Device (PCD)
  • ISO 15693 (1, 2, 3): Vicinity Coupling Device (VCD) or Base Station for RFID labels and tags
  • ISO 21481 (ECMA 352): the device is able to communicate with any NFC object running in card emulation mode
RF Bitrate
  • 106kbit/s (ISO 14443, NFC-A & NFC-B), 212 or 424kbit/s (FeliCa, NFC-F), 26kbps (ISO 15693, NFC-V)
Supported cards/tags/labels
  • ASK CTS256/CTS512
  • ATMEL CryptoRF
  • Calypso (CD97, CD21, GTML, etc), Innovatron radio protocol "14443 B'"
  • FeliCa Lite, Lite-S (NFC Forum T3T)
  • HID iClass, Inside PicoTag (UID only)
  • Infineon SLE66 family
  • Innovision Jewel, Topaz (NFC Forum T1T)
  • NXP Mifare UltraLight, NTAG (NFC Forum T2T), Mifare Classic, Mifare Plus, Desfire, SmartMX...
  • NXP ICODE-SLI family
  • ST MicroElectronics SR, SRI, SRIX families
  • ST MicroElectronics LR family
  • Texas Instrument my-d proximity
  • Texas Instrument my-d vicinity
  • Thinfilm NFC Barcode
  • 4 processing templates to fetch data from the cards (UID, stored data, APDU response...)
  • Low power card detection mode (LPCD) to reduce power consumption while waiting for a contactless card
  • Integrated
Serial Host Interface for all versions
  • Serial - 38400 or 115200bps
TTL version Host Interface
  • TTL / CMOS compliant (0-5V or 0-3V)
232 version Host Interface
  • RS-232 (-6 / +6 V)
485 Version Host Interface
  • RS-485 (differential - bus)
Software integration / development
  • Free SDK for SpringCard access control readers
  • 3 to 5V DC
  • 8-pin JST SHR (serial link)
Firmware upgrade
  • In-field, no physical action on the device using SpringCard FUU application (provided that the RESET pin is controlled by the host)
  • In-field configuration using secured "master cards"
  • In-field configuration through serial link using SpringCard MultiConf application
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